8+11-17= 13+7-8= 11-7+4= 15-14+19= 9+5-12=
12-8+4= 4-2+18= 8+10-7= 15-5+1= 6+9-2=
12+3-3= 6-1+4= 6+8-12= 3+7-2= 5+15-10=
11+7-7= 11+7-2= 7-6+6= 5-3+16= 16-1+2=
11-4+7= 5+3-1= 12-10+15= 19-13+11= 15-13+3=
8-1+9= 19-13+13= 7+11-3= 8+10-16= 4-1+1=
4-3+19= 17+3-17= 7-4+6= 19-15+9= 10-6+11=
7+8-11= 16-9+8= 19-9+3= 7+10-4= 15-11+4=
10+6-7= 17-13+2= 14-6+3= 20-18+7= 16+4-10=